Using C not Java

Write a multi-thread program using Java which will prompt the user to enter on the conmend f+f(x)=1+11+21+y1+n++n11n=1,2,3,4 Upon successful threads completion, the parent thread should find the sum of each reponed value reported by its child thread and output the final sum. The parent thread output: f(0)=1.000000 f(2)f(1)=1.000000 f(3)f(3)=0.500000 f(4)=0.166667 The final sum of the previous values are =2.708333